/* * Many of the syscalls used in this file expect some of the arguments * to be __user pointers not __kernel pointers. To limit the sparse * noise, turn off sparse checking for this file. */ #ifdef __CHECKER__ #undef __CHECKER__ #warning "Sparse checking disabled for this file" #endif #include #include #include #include #include #include #include #include #include #include "do_mounts.h" unsigned long initrd_start, initrd_end; int initrd_below_start_ok; unsigned int real_root_dev; /* do_proc_dointvec cannot handle kdev_t */ static int __initdata mount_initrd = 1; static int __init no_initrd(char *str) { mount_initrd = 0; return 1; } __setup("noinitrd", no_initrd); static int init_linuxrc(struct subprocess_info *info, struct cred *new) { sys_unshare(CLONE_FS | CLONE_FILES); /* stdin/stdout/stderr for /linuxrc */ sys_open("/dev/console", O_RDWR, 0); sys_dup(0); sys_dup(0); /* move initrd over / and chdir/chroot in initrd root */ sys_chdir("/root"); sys_mount(".", "/", NULL, MS_MOVE, NULL); sys_chroot("."); sys_setsid(); return 0; } static void __init handle_initrd(void) { struct subprocess_info *info; static char *argv[] = { "linuxrc", NULL, }; extern char *envp_init[]; int error; real_root_dev = new_encode_dev(ROOT_DEV); create_dev("/dev/root.old", Root_RAM0); /* mount initrd on rootfs' /root */ mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY); sys_mkdir("/old", 0700); sys_chdir("/old"); /* try loading default modules from initrd */ load_default_modules(); /* * In case that a resume from disk is carried out by linuxrc or one of * its children, we need to tell the freezer not to wait for us. */ current->flags |= PF_FREEZER_SKIP; info = call_usermodehelper_setup("/linuxrc", argv, envp_init, GFP_KERNEL, init_linuxrc, NULL, NULL); if (!info) return; call_usermodehelper_exec(info, UMH_WAIT_PROC); current->flags &= ~PF_FREEZER_SKIP; /* move initrd to rootfs' /old */ sys_mount("..", ".", NULL, MS_MOVE, NULL); /* switch root and cwd back to / of rootfs */ sys_chroot(".."); if (new_decode_dev(real_root_dev) == Root_RAM0) { sys_chdir("/old"); return; } sys_chdir("/"); ROOT_DEV = new_decode_dev(real_root_dev); mount_root(); printk(KERN_NOTICE "Trying to move old root to /initrd ... "); error = sys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL); if (!error) printk("okay\n"); else { int fd = sys_open("/dev/root.old", O_RDWR, 0); if (error == -ENOENT) printk("/initrd does not exist. Ignored.\n"); else printk("failed\n"); printk(KERN_NOTICE "Unmounting old root\n"); sys_umount("/old", MNT_DETACH); printk(KERN_NOTICE "Trying to free ramdisk memory ... "); if (fd < 0) { error = fd; } else { error = sys_ioctl(fd, BLKFLSBUF, 0); sys_close(fd); } printk(!error ? "okay\n" : "failed\n"); } } bool __init initrd_load(void) { if (mount_initrd) { create_dev("/dev/ram", Root_RAM0); /* * Load the initrd data into /dev/ram0. Execute it as initrd * unless /dev/ram0 is supposed to be our actual root device, * in that case the ram disk is just set up here, and gets * mounted in the normal path. */ if (rd_load_image("/initrd.image") && ROOT_DEV != Root_RAM0) { sys_unlink("/initrd.image"); handle_initrd(); return true; } } sys_unlink("/initrd.image"); return false; } codec.h?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>plain -rw-r--r--aci.h2419log plain -rw-r--r--ad1816a.h5514log plain -rw-r--r--ad1843.h1516log plain -rw-r--r--adau1373.h699log plain -rw-r--r--aess.h1668log plain -rw-r--r--ak4113.h11112log plain -rw-r--r--ak4114.h10424log plain -rw-r--r--ak4117.h9193log plain -rw-r--r--ak4531_codec.h3173log plain -rw-r--r--ak4641.h622log plain -rw-r--r--ak4xxx-adda.h3416log plain -rw-r--r--alc5623.h497log plain -rw-r--r--asequencer.h3670log plain -rw-r--r--asound.h1285log plain -rw-r--r--asoundef.h17098log plain -rw-r--r--atmel-abdac.h639log plain -rw-r--r--atmel-ac97c.h1342log plain -rw-r--r--compress_driver.h6772log plain -rw-r--r--control.h8704log plain -rw-r--r--core.h14380log plain -rw-r--r--cs35l33.h1034log plain -rw-r--r--cs35l34.h887log plain -rw-r--r--cs4231-regs.h8480log plain -rw-r--r--cs4271.h1417log plain -rw-r--r--cs42l52.h738log plain -rw-r--r--cs42l56.h1192log plain -rw-r--r--cs42l73.h507log plain -rw-r--r--cs8403.h8833log plain -rw-r--r--cs8427.h10649log plain -rw-r--r--da7213.h1178log plain -rw-r--r--da7218.h2681log plain -rw-r--r--da7219-aad.h2476log plain -rw-r--r--da7219.h1064log plain -rw-r--r--da9055.h914log plain -rw-r--r--designware_i2s.h2249log plain -rw-r--r--dmaengine_pcm.h6157log plain -rw-r--r--emu10k1.h91396log plain -rw-r--r--emu10k1_synth.h1382log plain -rw-r--r--emu8000.h4109log plain -rw-r--r--emu8000_reg.h10459log plain -rw-r--r--emux_legacy.h5503log plain -rw-r--r--emux_synth.h7649log plain -rw-r--r--es1688.h3618log plain -rw-r--r--gus.h20691log plain -rw-r--r--hda_chmap.h2621log plain -rw-r--r--hda_hwdep.h1412log plain -rw-r--r--hda_i915.h1645log plain -rw-r--r--hda_register.h9475log plain -rw-r--r--hda_regmap.h6714log plain -rw-r--r--hda_verbs.h17130log plain -rw-r--r--hdaudio.h18455log plain -rw-r--r--hdaudio_ext.h7119log plain -rw-r--r--hdmi-codec.h2290log plain -rw-r--r--hwdep.h2624log plain -rw-r--r--i2c.h3555log plain -rw-r--r--info.h7584log plain